如何在PHP中获得2个组合数组的结果？

I have 2 arrays, $m and $w:

我有2个数组，$ m和$ w：

$m = Array(
 [0] => a
 [1] => b
 [2] => c
);

$w = Array(
 [0] => 1
 [1] => 2
 [2] => 3
);

How may I combime those 2 arrays to get result like this:

我怎么可以组合这两个数组来获得这样的结果：

$arrFields = Array(
     Array( 
       "VALUE" => a,
       "DESCRIPTION" => 1 
     ), 
     Array( 
       "VALUE" => b, 
       "DESCRIPTION" => 2  
     ),
     Array( 
       "VALUE" => c, 
       "DESCRIPTION" => 3 
     )
);

Help me to solve this problem, thanks.

帮我解决这个问题，谢谢。

3 个解决方案

#1

This code will do the thrick: combine both arrays with the same keys. It also checks if the second array has the same key, otherwise it'll make the description empty.

这段代码可以解决这个问题：将两个数组组合在一起。它还检查第二个数组是否具有相同的键，否则它将使描述为空。

$arrFields = array();
foreach ($m as $k => $v) {
    $arrFields[] = array(
        'VALUE' => $v,
        'DESCRIPTION' => (isset($w[$k]) && !empty($w[$k]) ? $w[$k] : '')
    );
}

#2

This should work for you:

这应该适合你：

(Here I just go through each element of $m with array_map() and return the array with the values from $m and $w)

（这里我只使用array_map（）遍历$ m的每个元素，并返回数值为$ m和$ w的数组）

<?php

    $m = array("a", "b", "c");
    $w = array(1, 2, 3);

    $arrFields = array_map(function($v)use($w, $m){
        return array("VALUE" => $v, "DESCRIPTION" => $w[array_search($v, $m)]);
    }, $m);

    print_r($arrFields);

?>

Output:

输出：

Array
(
    [0] => Array
        (
            [VALUE] => a
            [DESCRIPTION] => 1
        )

    [1] => Array
        (
            [VALUE] => b
            [DESCRIPTION] => 2
        )

    [2] => Array
        (
            [VALUE] => c
            [DESCRIPTION] => 3
        )

)

#3

More convenient way of using array_map function

使用array_map函数更方便的方法

$return = array_map(function($m_item, $w_item){
    return array("VALUE" => $m_item, "DESCRIPTION" => $w_item);
    }, $m, $w);
print_r($return);

#1